Dan Cobb

I am in the middle of a few small projects on the carrera and it just happens that cleaning the inside of all the windows was on the list.

That's when it occured to me that the inside of the glass is REALLY dirty.
I have converted the rear 1/4 windows to the opening kind, but I'm unsure if that has any impact on the situation. Perhaps exhaust fumes get drawn back into the car enough when they are opened to create this dirty film?

I hadn't noticed it as a problem prior to the the rear window conversion, but it's been nearly 2 years since so i can't honestly recall.

Has anyone else had this type of problem? If so, did you ever figure out the reason?

I remember having an old Ford truck once that blew a heater core. The inside of the glass got a slimy film all over it due to the anti-freeze fumes. Clearly not the cause of this particular problem, but there must be a reason and I can't figure it out.

Any insight would be greatly appreciated.
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old man neri

Commonly referred to as 'vinyl fog'. If you use cleaning products inside the car, it will fog. Windex and newspaper is the best solution. An air cooled engine is probably more prone to stuff forming on the windows because of where the air is coming from.

dbryant61

Does your car sit in the sun? I am convinced that this film is from the vinyl pieces in the interior off-gassing.

Dan Cobb

Excellent points gentlemen.
I recovered the rear deck w/ vinyl a couple years ago. It has since faded to a non-matching color and I'll be thinking about a leather replacement or ??? in the next few months.

I thought about making a fiberglass piece that fits back there and painting it to match the car.
I actually thought of doing the same thing w/ the dash as there are FG replacements available. I wonder how that might look though. Possibly dread awful, maybe not too bad. I can't decide.
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Peter Zimmermann

Dan: I've also discovered that ArmorAll is famous for out gassing, which will leave as much fog on the inside of the glass as smokers did years ago...

The Brewmeister

Clean them often. It's a situation that annoys the hell out of us Concour guys. You clean the windows
as you prepare the car for judging but that dang film always manages to return just as the judges are
ready to score your car!

Slantnose!

Nice idea.."clean them often".

Jay H

Pete is right. Armor All is horrid for interiors.

I use Lexol Vinylex for all my interiors, especially for my concours car. It's non greasy, has great UV protection and really cuts down on off gasing from the dash and rear deck areas. It also is not overly shiny after application. I've been using it for over 10 years now with exceptional results.

As Nari mentions above, your favorite window cleaner and newspaper/paper toweling is a cheap and easy way to clean the windows. Micro fiber towels with window cleaner is also a good combo.

Jay
90 964, 84 3.2

911S3.6

+1 on all the Lexol products, / Vinylex.

theiceman

I thought how could it still be outgassing after 25 years ? until I read you recovered it. Also I just use vinegar and water, and newsprint ....

r911

yes, it is outgassing from the vinyl - just imagine what it is doing to your lungs...

Porsche makes a special cleaner to get it off - t=none of the regular cleaners work well - they just smear it around

nasty stuff

Dan Cobb

Thank god I don't use Armor-all.
I use a liberal amount of windex to clean it off and that works well for a reasonable amount of time.
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WitchDoctor

Vinegar and water? Great idea. I can never seem to clean my glass w/out streaks, etc.

Any one want some armour all products?

Brent

Peter Zimmermann

Brent: Ice dated himself with that comment !

That's the combo my parents used to use so many years ago I can't think about it. And there's nothing as good as newspaper to dry the glass for a streak-free shine. Of course, I don't think the paper would be very kind to add-on window tint...

theiceman

.. oh did I say may great grandmother taught me that trick ? ... Yeah about lines up with Petes timeline ..

I must admit I still use it today and it works..